Improved post-auger



PATENT OFFICE.

A. VAUGHAN, OF CHICAGO, ILLINOIS.

IMPROVED POST-AUG-ER.

Specification forming part of Leiters Patent No. 91,387, dated June 15, 1869.

To all whom it may concern Be it known that I, A. VAUGHAN, of Chicago, in the county of Cook and State ot Illinois,

have invented a useful Improvement in Post- Augers and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings and letters marked thereon, making a part of this specication, in which- Figure l is an elevation of my improved post-auger; Fig. 2, a vertical section of the same; Fig. 3, a horizontal sectional view, looking upward.

The present invention relates to an improvement in that class of post-augers which are provided with hollow tubes to admit air into the post-hole when the earth above the auger is being removed and its nature consists in the peculiar construction of the point, which is concaved out on its opposite sides and provided with ribs in front of conical holes, to prevent the latter from packing with earth when a post-hole is being sunk, said point being cast solid to the arms which support the lips of the auger, and conveniently arranged to fasten to the fully shown.

F represents the point of the auger, which is made of cast metal, and provided with arms D for` the support of the lips B B, and with a cylindrical cavity in its upper end for the hollow shank, as hereinafter reception of the tubular shank A, which is screwed fast to it, as shown at Fig. 2. The opposite sides H of the point are so concaved out as to form ribs, J, which project outward and beyond the holes I, and prevent them from being packed with earth when a post-hole is bein dug. The holes I communicate with the tube A, and their lower ends are made the largest, in order that if loose earth should by any means pass into them, it will fall out by its own gravity, or be readily forced out by the pressure of atm osphere when the auger is lifted up, instead ot' its sticking fast, as is the case when the holes have a cylindrical form. By means ot these concave sides, the holes I can be Inade more nearly vertical than when the point is conical or square, and at the same time at less cost, as-they are so much shorter, and consequently require less drilling'.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent ot the `United States, is-

In the construction ofpost-augers, the point F, which is provided with recesses on its opposite sides, conical holes I I, communicating with the tubular shank, and ribs J J, protecting the holes from earth, and also with arms D D for the support of the lips B B, as set forth and shown.

A. VAUGHAN. Witnesses:

G. L. CHAPIN, E. E. GIBSON. 

